Are you looking to add some 3D elements to your After Effects projects? One way to do this is by creating and exporting OBJ files, which can then be imported into After Effects for use in your compositions. In this tutorial, we'll walk through the process of making an OBJ file in After Effects.

Step 1: Import your 3D model

Begin by creating or obtaining a 3D model that you want to incorporate into your After Effects project. This could be something you've created in a 3D modeling program like Blender or downloaded from a 3D asset library. Once you have your 3D model, import it into After Effects by going to File > Import > File.

Step 2: Set up your composition

Create a new composition in After Effects where you want to place your 3D object. Adjust the composition settings to match your project's specifications, including the frame rate, resolution, and duration.

Step 3: Add a 3D camera

To properly integrate your 3D object into your composition, you'll need to add a 3D camera. Go to Layer > New > Camera, and select the type of camera you want to use. Adjust the camera settings as needed to frame your 3D object within the composition.

Step 4: Position and animate your 3D object

Place your 3D object within the composition and adjust its position and orientation as desired. You can also animate the object by adding keyframes to its properties, such as position, rotation, and scale. This will give your 3D object movement and bring it to life within your composition.

Step 5: Export as OBJ sequence

Once you're satisfied with the placement and animation of your 3D object, it's time to export it as an OBJ sequence. To do this, go to Composition > Save Frame As > File. In the dialogue box that appears, choose the file format as OBJ sequence and select a location to save the file.

Step 6: Import OBJ sequence into 3D software

To verify the OBJ file, import it into a 3D modeling software such as Blender or Cinema 4D. This is to ensure that the OBJ file has been correctly exported with all the animations and textures intact.

By following these steps, you can create and export OBJ files in After Effects to seamlessly incorporate 3D elements into your video projects. Whether you're looking to add animated 3D text, logos, or characters to your videos, the ability to work with OBJ files in After Effects opens up a world of creative possibilities for your projects.